Combination lock



FIG. 1 is a front elevational view of the combination lock.

FIG. 2 is a rear elevational view thereof.

FIG. 3 is a left side elevational view thereof.

FIG. 4 is a right side elevational view thereof.

FIG. 5 is a top plan view of the combination lock. and,

FIG. 6 is a bottom plan view thereof.

The ornamental design for a combination lock, as shown and described.